Class InsertRow

java.lang.Object

InsertRow

public class InsertRow
extends Object

A class that represents a row that will be inserted in a table in a relational database. This class contains the code used to marshall the values of the individual columns to a single key-value pair.

Field Summary

Fields

Modifier and Type	Field and Description
static int	IS_NULL The field with this offset has a null value.
static int	IS_PKEY The field with this offset is a primary key.

Constructor Summary

Constructors

Constructor and Description
InsertRow(Table table, Object[] values) Constructs an InsertRow object for a row containing the specified values that is to be inserted in the specified table.

Method Summary

Modifier and Type	Method and Description
RowOutput	getKeyBuffer() Returns the RowOutput used for the key portion of the marshalled row.
RowOutput	getValueBuffer() Returns the RowOutput used for the value portion of the marshalled row.
void	marshall() Takes the collection of values for this InsertRow and marshalls them into a key/value pair.
String	toString() Returns a String representation of this InsertRow object.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

IS_PKEY

public static final int IS_PKEY

The field with this offset is a primary key.

See Also:

Constant Field Values

IS_NULL

public static final int IS_NULL

The field with this offset has a null value.

See Also:

Constant Field Values

Constructor Detail

InsertRow

public InsertRow(Table table,
                 Object[] values)

Constructs an InsertRow object for a row containing the specified values that is to be inserted in the specified table.

Parameters:

t - the table

values - the column values for the row to be inserted

Method Detail

marshall

public void marshall()
              throws IOException

Takes the collection of values for this InsertRow and marshalls them into a key/value pair. (Note: We include a throws clause because this method will use methods like writeInt() that the RowOutput class inherits from DataOutputStream, and those methods could in theory throw that exception. In reality, an IOException should *not* occur in the context of our RowOutput class.)

Throws:

IOException

getKeyBuffer

public RowOutput getKeyBuffer()

Returns the RowOutput used for the key portion of the marshalled row.

Returns:

the key's RowOutput

getValueBuffer

public RowOutput getValueBuffer()

Returns the RowOutput used for the value portion of the marshalled row.

Returns:

the value's RowOutput

toString

public String toString()

Returns a String representation of this InsertRow object.

Overrides:

toString in class Object

Returns:

a String for this InsertRow